Portable overhead trackway.



J. P. REILLY.

PORTABLE OVERHEAD TRAGKWAY.

APPLICATION FILED NOV. 29, 1912.

Patented Feb.

'"II NIH I CDLUMBIA PLANOGRAPH CO.,WASMINOTON, D. C.

JAMES F. REILLY, OF BALTIMORE, MARYLAND.

PORTABLE OVERHEAD TRACKWAY.

Specification of Letters Patent.

Patented Feb. 4,1913.

Application filed November 29, 1912. Serial No. 733,936.

To all whom it may concern:

Be it known that I, JAMES F. REILLY, a citizen of the United States,residing at Baltimore, in the State of Maryland, have invented certainnew and useful Improvements in Portable Overhead Trackways, of which thefollowing is a specification.

This invention relates to an improved construction of portable trackwayand support for overhead carriers and has particular reference to aconstruction for suspending an I-beam track rail in tunnel constructionso that the rail may be readily secured in place without the necessityof boring or drilling holes therein thereby leaving the rail in a goodcommercial condition for sale after it has served its purpose as atrackrail in the engineering or construction work.

The invention is illustrated in the accompanying drawing wherein,-

Figure 1, shows a vertical sectional elevat-ion through an I-beam railwith a twowheel suspension truck attached thereto and also shows theearth supporting frame structure and the railsupporting plates carriedby the latter. Fig. 2, illustrates an inverted or bottom plan view ofthe horizontal beam of the supporting structure; the rail-suspensionplate and the rail therein. Figs. 3 and 4 show side elevation and bottomplan views respectively of the suspension plate for joining or holdingthe ends of two rails in position, and Figs. 5 and 6, illustrate sideand bottom plan views of the suspension plate employed to join the endsof the rails at points intermediate the structural frame supports.

In the drawing, 1, designates the side supports or legs and, 2, thehorizontal crossbeams or caps of the earth supporting structure whichconnect the side support or legs whereby to form an elevated structurefrom which the load is to be suspended. In practice, and particularly intunnel engineering work it is customary to locate the earth supportingstructures at suitable spaced-apart points, which vary according to thecharacter of the soil. The fact that the distance between thecross-beams or caps varies makes it desirable to provide a rail hangerby which the suspension of the overhead rail 3, may be secured withoutthe necessity of drilling holes in the rails because such drilling couldnot be done except at the time of extending the rail because the holesin the rail must be at such points where attachlines in Fig. 1, andlag-bolts or screws, 9

a flat bearing face, 5, to seat close against the under face, 6, of thehorizontal crossbeam or cap, 2. Each plate has a side lug or extension,7, with a perforation, 8, therein, the perforation being shown in brokenn 1 pass freely through said perforations and are secured into thecross-beam, 2, from the under side so as to rigidly seat the face, 5, ofthe plate against the beam. On the under side each suspension plate hasa horizontal cross-wise channelway comprising an enlarged cavity, 10,and a narrower under-side opening, 11, which latter is formed byproviding suspension lugs, 12, on the under side which lugs project inaddition toward each other so as to partially close the entrance to saidchannelway from the under side but leave said channelway openhorizontally and at opposite ends.

The suspended rail, 3, is of the I-bearn type having a central verticalweb, 13, and upper and lower flanges, 14, and, 15, respectively. Theupper flanges, 14, of the suspended rail pass through the channelwaycavity, 10, and the suspension lugs, 12, project beneath the saidflanges and sustain the rail from said upper flanges. The rails areconnected with the suspension plates inserting the ends of the upperflanges 1n one end of the channelway and then sliding the raillongitudinally through the channelway with the web, 13, of the raildepending through the under opening, 11, and between the suspensionlugs. Suitable set bolts, 16, screw through the suspension lugs, 12, andimpinge on the upper flanges, 14, of the rail so as to preventlongitudinal movement of the rail. The rail is suspended so that thelower flanges, 15, on each side of the web 13, thereof may be utilizedas tracks for a two wheeled suspension trolley, 17,one wheel, 18,traveling on the flange at one side of the web and the other wheel, 19,riding on the flange at the other side of the web.

In cases where two track rails are to be abutted at a point beneath oneof the crossbeams or caps, 2, the suspension plate, 20, is provided withsuspension lugs, 21, which are somewhat broader than the side lugs oreX- tension, 22, and in such case the suspension lug may have aplurality of set-bolts, 28, so

that at least one bolt will bind on the end of each rail as shown inFigs. 3 and 4.

hen the joint between rails must be effected at a point intermediate thecrossbeams or caps, 2, a coupling plate, 24, having the suspension lugs,25, may be employed and in this instance each lug may have a pluralityof sot-bolts, 26, as shown in Figs. 5 and G, of the drawings.

It is to be understood that in tunnel construction the vertical legs, 1,and cross beams or caps, 2, are provided on their side which confrontstheearth wall with boarding or sheathing 27, so as to sustain the earthwhile the tunnel Wall is formed with concrete or concrete and brick asthe case may be By suspending the load, either of the material excavatedor of the materials entering into the tunnel construction the bottom isleft free of tracks and the work much facilitated.

Having thus described my invention what I claim and desire to secure byLetters Patent is A suspension trackway having upper supporting members;a suspension plate having side extensions by which the same is securedto the said supporting members and each plate being; provided on itsbottom side with a channelway and with suspension lugs at each side ofthe ehannelway; a set bolt extending through the suspension lug andentering the channelway; a rail having a central web and upper and lowerside flanges,- the upper flanges of the rail entering the channelway andresting on the upper side of the suspension lugs and the set boltengaging the suspension flange at the upper side of the rail and asuspension trolley having wheels to straddle the central web of the railand ride on the lower flanges 01": the rail whereby to pendantly sustaina load from the lower flanges of the rail.

In testimony whereof I ailix my signature in presence of two witnesses.

J AMES F. REILLY.

lVitnesses G. Fem). Voe'r, CHAS. B. MANN.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents. Washington, D. G.

